The Chinese river dolphin is one of the First-Grade State Protection animals, a (an) mammal with its name – water panda.
These surveys indicate that many crimes go _____ by the police, mainly because not allvictims report them.
The wealth of a country should be measured _____ the wealth and happiness of its people as well as the material goods it can produce.
As the saying goes, one is never too old to learn. After he _____, he will devote himself to gardening.
----You just think of yourself! You kept me waiting for at least three hours.----I am sorry that you _____ think so.
Some say one thing, but _____.